﻿
        function toggle (name, img)
        {
        var element = document.getElementById (name);

        if (element.style.display == 'none')
        element.style.display = '';
        else
        element.style.display = 'none';

        var img_element = document.getElementById (img);

        if (img_element.src.indexOf ('minus.png') > 0)
        img_element.src = 'plus.png';
        else
        img_element.src = 'minus.png';
        }
